Apparatus for winding web materials



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[1. 070 MBA/8057151" Patented Aug. 29, 1944 UNITED STATES PATENT OFFICE APPARATUS FOR WINDING WEB MATERIALS Lloyd Hornbostel, Beloit, Wis, assignor to Beloit Iron Works, Beloit, Wis., a corporation of Wisconsin Application July 8, 1942, Serial No. 450,150

24 Claims.

' cally described in connection with the winding of paper into rolls, it should be understood that the machines of this invention are not limited to such use and that the methods of this invention are likewise not limited to such use. Generally speaking, the invention relates to machines and methods for winding any type of web material into rolls.

According to this invention paper is wound into a roll on a winder shaft which is mounted in the nip between a pair of under drums. These under drums are rotatably mounted in spaced horizontal relation and the sheet to be wound is directed under one of the drums, up between the drums and thence around the winder shaft mounted in the nip of the drums. The drums are rotated to drive the sheet and winder shaft so as to cause the shaft to rotate and receive therearound a plurality of turns of paper.

In order to obtain a good tight start of the paper on the winder shaft, for preventing slip- .page between the roll being wound, and the under drum, and for preventing endwise movement of the rolls as they are being wound, a rider roll is allowed to rest on top of the winder shaft and the roll being wound. This rider roll will rotate with the roll being wound and its weight will cause the roll being wound to press down on the under drums and thereby prevent slippage or relative endwise movement.

The rider roll must raise away from the under drums as the roll being wound increases in diameter and accordingly must be movably mounted on the winding machine. When the winding operation is completed, the rider drum must be moved away from the wound roll so that the wound roll can be discharged from the winding machine. The winding machine should therefore have some means for holding the rider roll in elevated position away from the wound roll.

The present invention now provides adjustable counterweight means for the rider roll so that the exact desired .pressure can be applied on the roll being wound. This feature of theinvention can take the form of a sprocket having an adjustable block at the center thereof. for

varying the eccentricity of the sprocket relative to its mounting. The degree of eccentricity will control the effective weight of the counterweight on the rider roll. As a result of such a construction, it is not necessary to add or subtract weight from the counterweight in order to obtain a desired effective weight of the rider roll on the paper.

Another feature of the invention resides in equal distribution of the counterweight effect to both ends of the rider roll. This can be accomplished in the machines of this invention by the use of a hollow cross shaft with the counterbalance effect applied at the center of the shaft to eliminate torsion twist variations upsetting an even counterweight effect on both ends of. the winder roll. If the counterweight effort were applied to one end of a shaft a slight deflection or twisting of this shaft would upset equal balance conditions.

The effective weight of the rider roll may, on some machines, be sufficiently light to permit the rolls to be raised and lowered by manual manipulation and, in one form of the machines of this invention, such manual control devices are provided. These machines are normally rather narrow.

On the other hand, in very wide winding machines, accommodating the winding of very wide webs of paper, the effective weight of the rider roll may be too great for manual control. Therefore, in accordance with another form of this invention, motor driven means are providedto raise and lower the rider rolls.

An important feature of the motor controlled rider roll machines is the provision of an automatic brake on the driving motor for holding the rider in elevated position whenever the motor is shut off together with the provision 'of a ratchet connection between the motor lift and the rider roll which will permit the roll to raise during the winding operation even though the motor is locked.

Another feature of the motor controlled rider roll machines of this invention is the provision of spring pawls on the ratchet teeth which will permit the rider roll to drop in the event that it dances upwardly during operation to catch the next tooth on. the ratchet. The spring pawls,

in such event will allow the rider roll to lower and still have its effective weight borne on the paper being wound.

A still further feature of the motor controlled rider roll machines of this invention is the provision of an automatically operating brake which will cause the motor to directly lift the rider roll without operation of the pawls.

In still another embodiment of the invention the raising and lowering of the rider roll is controlled by air pressure.

As the pressure, exerted by the roll being wound on the under drum increases due to the increased weight of the roll, the effective weight of the rider roll should be decreased so that a uniformly hard wound roll will be obtained. This is automatically accomplished on the machinesof this invention by arra ging the eccentric mounting of the counterweight sprocket in a manner to decrease the length of the eccentric arm to the rider roll while increasingthe length of the eccentric arm to the counterweight as the rider roll is raised by the roll of paper. By this arrangement, the counterweight effect on the rider roll is least when the winding operation is started and most when the roll of paper is completely wound. No adjustment during the winding operation need be made to bring about this eflect, since the initial eccentric adjustment of the sprocket relative to its shaft will control the increasing eflect of the counterweight.

An object of this invention, therefore, is to provide a winding machine which automatically compensates for the increasing weight of the material being wound to produce a uniformly hard roll of material.

A still further object of the invention is to provide a web winding machine having an automatic rider roll control to decrease the effective weight of the rider roll on the material being wound as the roll of material increases in diameter.

A further object of this invention is to provide a web winding machine with a counterbalanced rider roll wherein the counterbalancing effect is always equally applied to both ends, of the rider roll.

A still further object of this invention is to provide a power control for rider rolls of web winding machines.

A specific object of the invention is to provide a paper winder with a motor. operated rider roll control adapted to raise and lower the rider roll at the finish and start of a winding operation without interfering with the rider roll effect on the paper during the winding operation.

A still further object of this invention is to provide a fluid pressure operated control for the rider roll of a paper winding machine.

Another object of the invention is to provide an improved method of winding web material.

Another object of the invention is to provide a method of winding paper wherein the increasing weight of the paper on a winding drum is automatically offset by decreasing rider roll pressure on the roll of paper as the roll increases in diameter.

A specific object of this invention is to provide a readily adjustable eccentric counterweight control for paper winding machines.

Still another specific object of this invention is to provide a motor driven control for the rider roll of a paper winding machine which will lower the rider roll onto the winder shaft at a high rate of speed withoutpermitting the accumulation of slack -in the counterbalancing linkage for the rider roll when the rider roll is deposited on the winder shafts A still further specific object of this invention is to provide means which will automatically be apparent to those hold the rider roll in an elevated position during the removal of the wound roll from the machine.

Other and further objects of the invention will skilled in the art from the following detailed descriptions of the annexed sheets of drawings, which, by way of preferred examples, illustrate several embodiments of the invention.

0n the drawings:

Figure 1 is an end elevational view of one form. of paper winder according to this invention wherein the rider roll is manually raised and lowered.

Figure 2 is a side elevational view of the machine of Figure 1 'along the line 11-11 of Figure 1.

Figure 3 is an enlarged vertical cross-sectional view, with parts in elevation, taken along the line 1II-III of Figure 1.

Figure 4 is an enlarged cross-sectional view, with parts in elevatio taken along the line IVIV of Figure 2.

Figure 5 is a cross-sectional view, with parts in elevation, taken along the line V-V of Figure 4.

Figure 5a is a diagrammatic view illustrating the counterbalance arrangement of Figures 4 and 5 at the completion of the winding operation.

Fibure 5b is a diagrammatic view similar to Figure 5a illustrating the counterbalance arrangement at the start of the winding operation.

Figure 6 is an end elevational view of another embodiment of paper winding machine according to this invention wherein th rider roll is raised and lowered by means of an electric motor.

Figure 7 is a side elevational view of the machine of Figure 6 along the line VlI-VII- of Figure 6.

Figure 8 is an enlarged side elevational view, with parts in vertical cross section, of the upper portion of the machine of Figures 6 and 7.

Figure 9 is an enlarged end elevational view taken along the line IX-IX of Figure 8.

Figure 10 is an enlarged end elevational view, with parts in cross section, taken along the line XX of Figure 8.

Figure 11 is an enlarged end elevational view, with parts in cross section, taken along the line XIXI of Figure 8.

Figure 12 is a somewhat diagrammatic end elevational view, with parts in vertical cross section, of a fluid pressure operated rider roll control for machines of this invention.

Figure 13 is a wiring diagram for the machine of Figures 6 to 11 with parts of the machine in perspective and somewhat diagrammatically illustrated.

As shown on the drawings:

In Figures 1 and 2, the reference numeral I ll designates generally a winder machine having manually controlled raising and lowering means for the rider roll. The winder machine ID includes a pair. of end frames II, II with projecting pedestal portions Ila, a. A drum I2 is rotatably supported in the frame structure I I and is adapted to receive a web of paper W from the reel of a paper making machine. Trimmers such as T can cooperate with the drum I2 for cutting of! the deckle edges of the web W.

The web W is directed from the top of the drum I 2 beneath a first winder under drum l3 rotatably mounted in bearing supports carried by the pedestal portions I Ia, I I a of the frame structure. A second winder under drum I4 is similarly rotatably mounted in closely spaced horizontal relation from the drum I3. The two drums I3 and I4 provide a nip I5 therebetween for receivarms 11, ll of carriages I8, I8. The carriages I8, I8 are slidably mounted in vertical tracks I9, I9 of theframesII, II.

As best shown in Figure 1, each bearing cap I6 has a hinged cover I6a adapted to be opened for releasing the winder shaft S. The covers I6a are adapted to be held in locked position by means of trip latches such as 20.

The carriages I8 have chains 2| attached thereto and these chains are each trained over a separate sprocket 22.

As best shown in Figure 3, the sprockets 22 are fixed on a shaft 23 which is rotatably mounted on bearings such as 24 carried by the end frames II, II of the machine. A tubular reinforcing member 25 extends between the end frames II,

I I and is aflixed thereto for rigidifying the struc-' The shaft 23 can extend through this ture. tubular member. As shown in Figures 2 and 3 the chains 2I can enter slots 26 in the frames II so as to travel around the sprockets 22 and be afilxed thereto as shown in Figure 1.

The shaft 23-a1so has secured thereon a third sprocket 21 disposed outside of the frames II, II

at the rear endof the machine.

A chain 28 is trained around this sprocket 21 and has one end secured to the sprocket and the other end secured to a counterweight 29. The counterweight 29 will tend to rotate the shaft 23 for turning the sprockets 22 to raise the carriages I8, I8 although the counterweight is not sufficiently heavy toactually lift, without additional manual effort, the carriages I8, I8.

The other end of theshaft 23 likewise projects beyond the 'front end frame II and a fourth sprocket 30 is secured-thereon. This sprocket 30 is adapted to be rotated through'a chain 3| by a hand wheel 32. The hand wheel32 is rotatably carried by the front end frame I I at a level below the sprocket 30. Rotation of the hand wheel in reverse directions will therefore effect a raising and lowering of the carriages I8,and the bearing caps I6. Thecounterweight 20 will be effective to balance the weights of the carriages so that manual operation'of the handwheel 32 is quite easy. I

A rider roll 35 is rotatably mounted in bearings 36 carried by arms 31:; of carriages 31. The carriages3'I are also slidable in the vertical tracks I9 above the carriages I8.

The arms 310. support the bearings 36 to position the rider roll 35' directly over the winder shaft S.

Chains 38, 38 are secured at one end to the arms 31a, 3'Ia;'and are secured to sprockets 39, 39 at the other ends thereof. Thesprockets 39, as best shown in Figure 3, are secured on tubular members 40, 40, which members in turn, are rotatably mounted in bearings carried on extensions II'c of the end fr'ames I I.

A shaft 42 extends'throu'gh the tubular member 40 at the rear end of the machine and is rotatably mounted in thistubular member 46 on a plain bearing 43. The shaft 42 is joined through a coupling with a shaft 45 having a free end 45a-mounted i'na bearing, 46 on top of a support frame 41 as best shown in Figure 2. p

The support frame 41 can be anchored to the rear end frame II of themachine through a spacer shaft or other rigidifying means 48.

As best shown in Figure '3, thefshaft 42 extends tion.

midway between th frames Ho, Ho and has a boss 49 secured thereon. This boss has a peripheral flange 50 at the mid-portion thereof. Tubular members 5|, 5| have their inner ends disposed over the boss 49 and their outer ends disposed over and aflixed to the tubular members 40, 40. inner ends of the tubular members 5I and bolts 53 extend through the collars 52 and flange 50 for joining the tubular members 5I together and for uniting the tubular members to the shaft 42. A third sprocket 54 is secured on one of the tubular members 5I.

An endless chain 55, as best shown in Figure 2, is trained around the sprocket 54 and around a smaller sprocket 56 on a stub shaft 51 carried by the front end frame II. The other end of the stub shaft 51, as best shown in Figure 2, has a gear 58 keyed thereon meshing with a small gear 59 on a stub shaft 60 which is adapted to be manually rotated by a hand wheel- 6|. The sprocket and gear reduction provided by the sprockets 54 and 56, and bythe gears 58 and 59 facilitate manual rotation of the hand wheel 6I to rotate the sprocket 39 for raising and lowering the rider roll 35. I

In addition, however, the raising and lowering of the rider roll is further facilitated by a counterweight 62 connected through a chain 63 to a sprocket 64 on the shaft 45 and the eccentric setting of the sprocket 64 controls the effective weight of the rider roll 35 on the winder shaft S and roll of paper being wound on the winder shaft 8. The sprocket .64 also automatically decreases the effective. weight of the rider roll on the roll of paper being wound as the roll increases in diameter.

As shown in Figures 4 and 5, the sprocket 64 has an elongated hub portion 65 slidably mounted ona block 66 receiving the shaft 45 therethrough.

As shown in Figure 5 this block 66 has an outturned flange 66a at one end thereof adapted to overlie one face of the hub 65. An apertured end plate 61 is bolted to the-other end of the block 66 to overlie the other end face of the hub 65. This arrangement provides for a sliding movement of the hub over the block while holding the sprocket 64 on the block.

A screw :IOd 68 extends along the length of the hub 65 in the hollow portion thereof and is rotatably'mounted in the hub at its ends as at 68a. A knurled turning knob 69 is secured on the threaded rod 68 to facilitate manual rotation of the rod. The rod is threaded through the block 66 and extends through the shaft 45. Rotation of the rod will slide the'hub 65 along the block 66 to provide for any desired eccentric displacement of the peripheryof the sprocket 64 sprocket 64, the rider roll 35 and the counterweight 62 at the completion of a winding operalever arm L1, since the eccentric mounting of the sprocket 64 on the shaft 45 is such that'thes'e lever arm lengths will be reached when the rider Flanged collars 52 are secured to the In this position. the counterweight 62 is sprocket 64 is adJusted so roll has been raised by' the roll of paper being wound.

At the start of the windingoperation as illustrated in Figure 5b the rider roll 38 is resting on the winder shaft 8, the counterweight 82 is in elevated position and the arm lengths L and L1 are reversed so that the longer arm L is between the rider roll and the shaft while the shorter arm L1 is between the counterweight and the shaft. In this condition, therefore, the counterweight 82 will have less lifting efi'ect on the roll 85 since it only acts through a short lever arm. As the rider drum I8 is raised during the winding operation, however, the short length while the long arm decreases in length to increase the counterweight effect on the rider roll and "lighten" the roll,

By means of the eccentric mounting, therefore, any desired rider roll weight can be initially placed on the winder shaft and this weight will then be automatically decreased as the weight of the roll being wound increases. It is thus possible to maintain a substantially constant weight on the winder drums to insure the winding of a uniformly hard roll. The eccentric mounting is readily varied by manual rotation of the knob II and the counterweights need not be varied as heretofore to change their effect on the rider roll.

The counterweight effect will always be equally applied to both ends of the rider roll since it is transmitted through the shaft 42' which shaft, in turn, is coupled to the tubular members Ii at the mid-point between the sprockets 3 9. Any twisting of the tubular members must thus be equal and no variation in movements of the sprockets can occur. b

The machine of Figures 1 to 5 inclusive is operated by threading the paper web W over the drum it, under the drum i3, and up over the top portion of this drum. The hand wheel 32 is rotated to lower the bearing caps i! into the nip area between the drums II and II. The winder shaft 8 is placed in the bearing caps and the leading end of the paper is tucked around the winder shaft so that, as the shaft is rotated by the under drums i3 and it, the paper will be wound around the shaft.

rotated to lower the rider the shaft. The eccentric mounting for the that the rider roll will of weight on the shaft.

A hand wheel ii is next exert the desired amount The under drums are then driven to rotate the,

shaft and a roll of paper is thus wrapped around the shaft. During the winding operation the rider roll is moved upwardly by the roll of paper and, as it moves upwardly, its eflective weight on the roll automatically decreases as explained above, due to the eccentric mounting for the counterweight. When a roll of sufficient diameter has been wound, the hand wheel Si is rotated to raise the rider roll oi! of the wound roll of paper. The bearing caps are unlatched and the finished roll is discharged on of the under drum. Suitable locking devices (not shown) can be-provided for the hand wheels 32 and CI to prevent lowering of the rider roll when it is in its elevated position for the discharging operation, and to prevent lowering of the bearing caps when they are unlatched.

In Figures 6 and 7, the reference numeral 10 designates generally a winder machine having electric motor controlled raising and lowering means for the rider roll. includes a pair of end frames H, II with reararm increases in roll 35 down on top of- The winder machine 10 wardly projecting pedestal portions such as 'lia (Figure 6) and forwardly extending pedestal portions lib, lib (Figures 6 and 7). A drum 121s rotatably mounted on the pedestal portions Ila and is adapted to receive the web of paper w thereover. Trimmers suchas T can cooperate with the drum 12 for cutting 01! the deckle edges of the web W.

A first under drum I! is rotatably mounted in bearing supports carried by the end frames ii and a second under drum "is rotatably mounted in bearings carried by the pedestal portions lib of the end frames. The two drums is and II are in spaced horizontal relation and define a nip 1.! therebetween.

A winder shaft 8' is adapted to be mounted in the hip 15 between the under drums i3 and 14 in bearing caps it, 16. These bearing caps 18 are carried on the arms 11 of carriages 18 which are slidably mounted in vertical tracks 19 formed in the end frames 1 I.

As best shown in Figures 6, each bearing cap I. has a hinged cover its adapted to be opened for releasing the winder shaft S. Each cover 18a is adapted to be held in locked position during the winding operation by means of a trip latch Bil.

A cross shaft ai is mounted in the end frames Ii and carries sprockets such as 82 as shown in Figure 6. A second cross shaft 83 is mounted in the end frames Ii near the tops of the end frames and carries sprockets such as I. Chains 85 are trained around, the sprockets 82 and 84 adjacent each end frame ii and these chains are each at- 3 tached to a carriage 18.

The shaft l3 extends through the front end frame II and has another sprocket 88 secured thereon. This sprocket ll is driven by a chain 81 from a small gear 88 carried on a stub shaft by the end frame ii. The gear 88 is rotated by means of a hand wheel I! through a gear train (not shown). The'hand wheel 89 is thus adapted to be rotated for driving the shaft 83 and the sprockets II which in turn drive the chains 8! as to raise and lower the carriages is and thereupon raise and lower the bearing caps 16 for the winder shaft 8.

A rider roll assembly 9. is mounted on the end frames 'ii above the carriages is for the winder 60 shaft bearing caps. This assembly 80 includes end carriages ii slidable in the same tracks 19 as the carriages it. The carriages 9i are connected through a cross shaft 02. This crossshaft supports a plurality of straps 93 each carrying a as bearing housing 94 in which is rotatably mounted a rider roll support shaft 9|. Rider rolls 96 are carried on the shaft 95 and can, if desired, be

keyed to the sh t to be driven therewith. Alternatively, the ri er rolls a! can rotate freely on w the shaft 95 and rotary cutters (not shown) can be secured to the shaft for cutting a roll of paper B being wound on the winder shaft 3 into a plurality of rolls. The shaft 95 is adapted to be driven at both ends from motors 91 carried by the carriages 9|. Belts 9' connect the motors 91 to the drive pulleys on the ends of the shaft 95.

A cross shaft as is rotatably mounted in bearings I00 carried by the carriages 9i. This cross shaft has gears ill thereon meshing on vertical racks ll: carried by the end frames. As the assembly so is raised and lowered, the shaft 99 must rotate because of the rack and gear connection with the main frame.

Braking devices (not shown) controlled by hand 76." wheels ill; are provided in the housings of the to impede rotation of the shaft 99 bearings I to the raising and and thereby impart resistance lowering of the assembly 90.

Chains I04 are secured at one of their ends to the carriages 9| and are trained around sprockets I rotatably carried on extension supports I60 on the tops of the end frame 1 I. The other ends of the chains I04 are connected to counterweights such as I01 (Figure '6) having wheels I08 ridable on ways such as I09 provided by the ends frames 1 I.

Each sprocket I05 is similar to the sprocket 64 described in connection with Figure 4 and includes a mounting block I05a slidably mounted in the sprocket and controlled by a screw rod I05b so that the sprocket can' have any desired degree of eccentricity relative to its axis I050,

This arrangement is such that the rider roll assembly 90 can be counterbalanced by the weights I01 to any desired degree and therefore have a readily controlled effective weight on the roll of paper R. This effective weight can be adjusted so that it will automatically decrease as the roll R increases in diameter thereby raising the assembly 90.

As best shown in Figure 8, a cross frame He is carried by the end frames 1| near the tops thereof. A vertical support frame H0 is mounted on the cross frame He and extends upwardly therefrom to provide a bearing support III for a shaft II2 which extends through one pair of supports I06 for carrying a sprocket I05. The sprocket I05 is keyed on the shaft H2.

A gear II3 is secured on the outer end of the shaft for driving a small gear II4 of a limit switch II5 for a purpose to be more fully hereinafter described.

A gear H6 is mounted on the shaft I I2 in free rotatable relation thereon. This gear I I6 meshes with a gear I I1 on the drive shaft of a motor H8. The motor H8 is carried on the cross frame 1Ic.

A pair of pawl supports I I8 are secured to one face of the gear I I6. These supports carry pawls which engage a ratchet I keyed to the shaft I I2.

The other face of the gear II6 has a, brake drum I2I secured thereon. A brake mechanism I22 is mounted in the drum I2I and is keyed to t e shaft II2.

As best shown in Figure 11, the brake mechanism I22 includes a body member I23 disposed around the shaft H2 and keyed against relative rotation by means of a key I23a. The body member I23 has brake shoes I24 pivotally connected thereto at their lower ends. These brake shoes I24 are adapted to engage the inner face of the brake drum I2I.

Links I25 are pivoted at their lower ends to the body member I23 and to inwardly projecting ears I24a of the brake shoes. The upper end of one link I25 is pivoted to a housing I26 which is slidably mounted as at I21 on the body member. The other link I25 has the upper end thereof pivoted to a piston rod I28 carrying a piston I29 in the housing I26. 'A spring I30 urges the Piston and housing in a direction to move the brake shoes I24 off of the brake drum I2I.

As best shown in Figures 8 and 9, a compressed air tank I3I supplies air through a flexible hose or tube I32 to the interior of the housing I26, to force the piston I29 against the spring pressure I30 for moving the links I25 outwardly and thereby cause the brake shoes I24 to engage the brake drum I2I. The hose I32 is arranged so that it will permit oscillation of the brake assembly I22 during operation of the machine. A solenoid controlled air valve I3Ia. is provided in a compartment I3Ib of the tank I3I for admitting compressed air through a port I3Ic from the tank I3I to'the compartment and the tube I32 and for closing a port I3Id between the compartment and the outside atmosphere to actuate the brake shoes whenever the motor 8 is receiving current. The solenoid control for the'air valve is connected in the circuit with the motor II8 as shown in Fig. 13.

When the solenoid is de-energized, a spring I3Ie moves the valve I3Ia to close port I3Ic and open port I3Id, for venting air from the housing I26 to permit disengagement of the brake shoes I24.

As best shown in Figure 8, the motor-ll8 is equipped with a brake device that is automatically applied whenever the motor is deenergized for the purpose of locking the drive shaft I33 of the motor. As shown, this drive shaft I33 has disks I34 splined on the end thereof and adapted to be frictionally engaged by means of brake disks I35.

The brake disks I35 are actuated into brakin engagement with the disks I34 by means of a core I36 of a solenoid I31. This core I36 controls a lever I38 with a roller I38 on its free .This lever MI is spring urged by means of a spring I42 in a direction for applying the brake disks I35. However, whenever the core I36 of the solenoid I31 is depressed by passage of current through the solenoid I31, the lever I38 is pulled downwardly to swing the lever I4I for moving the disks I35 against the pressure of the spring I42 to release the disks I34 and permit the motor to operate. The lever I38 has an extension I380. projecting beyond the casing to permit manual disengagement of the brake.

The motor II8 thus has the drive shaft locked whenever the motor is deenergized. On the other hand, as soon as the motor is energized current flows through the solenoid I31' to release the brake and permit the drive shaft to be driven without brake interference.

The pawl supports N9 of Figure 8. as best shown in Figure 10, rotatably carry blocks I45 straddled by pawls I46. The pawls are slidable on the blocks I45 and are rotatable with the blocks. The pawls have tail portions I41 acted on by compression springs I48. The compression springs have the opposite ends seated on adjustable supports I49 carried in threaded relation in bosses I50 formed on the face of the gear IIG. The compression of the springs I48 can be adjusted by threading the abutment members I49 through the bosses I50. V

The springs I48 serve to -urge the pawls into engagement with the teeth of the ratchet I20. An additional set of compression springs I5I are provided between the blocks I45 and the pawls I46 for urging the pawls to move the tail portions I41 thereof against the blocks. These compression springs are adapted to be compressed whenever the ratchet I20 is moved in a counterclockwise direction as shown in Figure 10. This arrangement of the pawls permits, as more fully hereinafter described, the rider roll assembly to be lowered on top of the paper roll in the event that this assembly should dance and cause the pawls to engage the next tooth on the ratchet the rider rolls 96.

prior to the time that the paper roll has increased in diameter suflloiently to raise the assembly to cause this engagement.

As shown in Figure 13, electric power lines P supply current through relay switches R or L to drive the motor I It in opposite directions. When it is desired to drive the motor II8 for lowering the rider rolls 66 (Figure 7), push button L. B. is manually closed to energize coil L. C. and cause relay switch L to close. The brake device of the motor IIO will then be released since the solenoid coil I31 will also be energized to pull the solenoid core I 36 for releasing the brake.

' A coil B. C. is energized simultaneously with the coil L. C. to close a solenoid switch S. S. for ener izing the solenoid air valve I3Ia to supply air from the tank I3l to the housing I26 thereby causing the brake shoes I24 to engage the drum I2I. The motor II8 will then drive the shaft II2 to rotate the sprocket I for lowering the chains I04 to lower the rider rolls 96 until the limit switch 6 stops the motor. This switch I I5 has a screw shaft II5a driven through gears H3 and H4 from the shaft H2. The screw shaft 50. drives a rider II5b held against rotation by a rod I I5c, The rider II5b is moved by the screw shaft II5a against a switch L. S. to trip this switch and open a circuit to the lowering button L. B., releasing this button from closed position and stopping flow of current from the motor IIB when the rider rolls 96 have been lowered onto the winder shaft S.

When it is desired to raise the rider olls 86- off of the roll of paper being wound, the button R. B. is manually depressed to energize coil R. C. and thereby close the relay R for driving the motor H0 in a direction to rotate the gear I I6 for raising the rider roll. The gear I I6 will drive the pawls I46 (Fig. 10) for rotating the ratchet I20 to drive the shaft I I2 and thereby rotate the sprocket I05 for actuating the chain I04 to raise This raising operation will continue until the screw shaft 51: of the limit switch II5 moves the rider 5b against a switch R. S. for tripping this switch and opening a circuit to the raising button R. B. thereby releasing this button and stopping flow of current to the motor. Of course, whenever the motor is energized the solenoid I31 controlling the motor brake is energized to release the brake.

The motor driven machine of Figures 6 to 11 operates as follows:

The bearing caps I6 are lowered by manipulation of the hand wheel 89 to position the same adjacent the nip between the under drums I3 and I4. The winder shaft S is then placed in the bearing caps and the leading end of the paper web W is tucked around this shaft.

The motor I I8 is then started to lower the rider roll assembly for bringing the rider roll 06 down on top of the winder shaft S. As soon as the motor I I8 is energized, the motor brake is released as explained above. At the same time, the solenoid controlled air valve is automatically opened to supply air through the hose I32 to the brake I22 thereby causing the brake shoes to engage the brake drum. The gear H6 is driven by the gear I" of the motor and, since the brake shoes are engaging the drum I2I, the shaft I I2 will be driven to rotate the sprocket I05 for rais-' ing the counterweight and for lowering the rider roll assembly. The other sprocket I05 is not positively driven although it will operate in unison with the driven sprocket because the rider roll assembly 90 must have both carriages 9| move together since these carriages can only move when the cross shaft 00 rotates due to the rack and gear connection between the cross shaft and the main end frame. The shaft II2 will continue to be driven as long as the motor I I6 is operating. As the shaft H2 is driven, however, the gear H3 thereon is driving the limit switch I 50 and, when the rider rolls contact the winder shaft, the limit switch can be set so as to deenergize the motor. As soon as the motor is deenergized the motor brake is automatically applied and the brake shoes I24 are released from the drum I2I. In the event that the limit switch does not function to de-energize the motor, or is not used for this purpose. the motor may continue to operate after the rider rolls have been deposited on the winder shaft. When this condition occurs, however, the brake I22 is not strong enough to continue driving the shaft H2 and the brake shoes will slip on the brake drum I2I. This is caused by the fact that the brake I22 is not strong enough to raise the dead weight of the counterweight, and is only strong enough to drive when the weight of the counter roll assembly is offsetting the counterweight.

This motor drive arrangement can be quite rapid so as to quickly lower the rider roll assembly on top of the new winder shaft for'starting the new winding operation.

The under drums are next driven to rotate the winder shaft and wrap the web of paper around the shaft for building up the roll R. As this roll builds up in diameter, the rider roll assembly, of course, is raised. The raising of the rider roll assembly is permitted without driving the gear II6 since the pawls will merely click over the ratchet I20. The full desired counterbalancing effect of the counterweights on the rider roll assembly is thus obtained and the brake of the motor H0 will lock the gear II6 against rotation.

Since the winding operation is carried out at very high speed. the rider roll assembly may dance or jiggle up and down on top of the roll being wound. In the event that this occurs and the pawls I46 engage the next set of the teeth on the ratchet I20 before such engagement is desired, the springs I6I in the pawl assembly will permit reverse rotation of the ratchet to lower the rider roll assembly down on top of the roll being wound.

When the roll of paper R is completely wound, the motor is again energized and driven in the reverse direction for lifting the rider roll assembly off of the completely wound roll of paper. As soon as the motor is energized, the motor brake is released and the gear H6 will drive the shaft II2 through the pawls I46 and ratchet I20 for rotating the sprocket I 05 to raise the rider roll assembly. The gear H3 is then being rotated in the reverse direction to drive the limit switch I I5 in the reverse direction. When the limit switch reaches its stop position the motor will be deenergized and the motor brake will automatically be applied. The pawls I46 will engage the teeth of ratchet I20 to lock the ratchet against rotation since the gear I I6 is held stationary by the motor brake. The rider roll assembly will thus be held in elevated relation above the finished roll of paper and this roll is then discharged off of the under drums and over the discharge platform P (Figure 6).

assembly at the start and finish of a winding operation. The brake I22 is automatically brought into operation when the motor is being driven so that a direct drive can be obtained without requiring driving through the pawl and ratchet device. This pawl and ratchet device, on the other hand, operatesfreely when the motor is deenergized to permit full eflect of the rider roll on the roll of paper being wound. The eccentric sprockets control the efiective weight of the rider roll assembly on the paper roll and can be set so as to decrease the efiective weight of the rider roll assembly at any desired rate as the roll of paper being wound increases in diameter.

The motor need only drive one eccentric sprocket for raising and lowering the rider roll assembly at the start and finish of a winding operation because the rider roll assembly itself is constructed so that it cannot cock during the lifting and lowering operations. 7

The machine I10 diagrammatically illustrated in Figure 12, like the machines I and 10, includes a pair of under drums I'll and I12 in spaced horizontal relation and defining therebetween a nip I13 for receiving the winder shaft S". The web of paper W being wound is trained around the under side of the drum HI and up around this drum to the winder shaft being driven by the drum for winding up a roll R of the paper.

The winder shaft S" can receive bearing caps (not shown) on the ends thereof and these bearing caps are counterbalanced through chains such as I14. The machine has a cross shaft I15 containing carrying sprockets such as I18 and receiving the Counterweights such as I11 are secured to the other ends of the chains I14, The shaft I15 can be manually operated as described in connection with machines I0 and for raising and lowering the winder shaft S.

A second cross shaft I18 is provided on the machine above the shaft I and this shaft carries a block I18 on which a sprocket I80 is mounted. This sprocket I80 is eccentrically shiftable over the block I18 by means of the screw rod I8I. The sprocket I80 is of the same chains such as I15 therearound.

20I to the air cylinder I88 on thepiston rod side of the piston I81 therein.

The valve I88 has a stem I88a with a piston head I88b on the end thereof slidable in the housing I88.

A spring 202 surrounds the stem I88a and acts against the piston I88b for holdingthe valve I88 in opened position away from the port 288 so as to place the pipe lines I88 and 20I in communication.

I A small bleeder opening I81a is provided in the pipe line I81.

The air limit I88 has an actuator I88a adapted to be acted on by the finger I82a for opening the valve. When air is admitted from the pipe line I85 through the valve I88 and through the pipe line I81 to the interior of the housing I88, the valve I88 will be closed. However, as long as the finger I82a is below the actuator I88a of the valve. I88, the valve'I88 will be closed and air will be supplied to the piston rod side of the piston I81 thereby adding air pressure to the counterweight I84 for raising the rider roll I82 until the finger I82a thereof strikes the switch actuator I88a whereupon, as explained above, the valve I88 will be closed and the raising operation will stop.

With the valve I8| in th position shown in Figure 12, the pass I8Ib of the valve is vented to the atmosphere. A pip line 203 is connected with the valve I8I. This pipe line 208 extends to the head end of the cylinder I88. An air pressure regulating valve 204 is provided in the pipe line 203. A gauge 205 can also be provided to indicate the air pressure in the line 203. A by-pass pipe 208 is provided around the valve 204 and this by-pass pipe includes a check valve 201 therein adapted to open in one direction only for permitting flow from the cylinder I88 to the valve I8I.

The pressure regulating valve 204 can be set to control the pressure on the bottom side of the cylinder I88. Then when the valve IN is positioned so that thepass I8Ib thereof connects the main line I82 with the line 208 for the purpose of raising the piston I81 the raising construction as described hereinabove in con- 7 nection with the machines I0 and 10.

A rider roll I82 is adapted to ride on the winder shaft S and roll of paper R being wound thereon. This winder roll I82 is counterbalanced through chains such as I88 secured to sprockets (not shown). on the shaft I18. A chain I83a connects the sprocket I88 with a counterweight I84.

The counterweight I84 of a piston rod I85 entering an air cylinder I88 and having a piston head I81 on the end thereof slidable in the air cylinder I88.

Air is supplied from a pipe line I88 through a pressure regulating valve I88 at a pressure indicated by a gauge I80. A four-way valve is mounted on the end I8I receives air from the pipe I82 leading from the pressure regulating valve I88. The valve I8I has two passes With the valve in the position shown in .Figure 12, air from the pipe line I82 flows through the pass I8Ia of the valve into a pipe line I88 and through a T I84 into pipes I88 and I85a. The pipe I85 extends. to an air limit valve I88 which is actuated by a finger I82a on the rider roll I82. A pipe I81 extends from the limit valve I88 to the housing I88 of a piston-operated or diaphragm-operated valve I88 controlling a port 200 joining the pipe line I85a with a pipe line I8Ia and I8": as indicatedpressure can be definitely controlled.

The machine of Figure 12 operates as follows:

When the. paper roll R has been wound and it is desired to raise the rider roll I82ofl of the roll of paper so as to permit the roll to be discharged oil of the under drums HI and I12, the valve I8I is moved to the position shown so that the pipe line I82 discharges into the pipe lines I and I85a. Air pressure is thus admitted to the pipe line I85 only up to the limit valve I88. Air pressure is admitted to the pipe line I85a into the pipe line 20I and into the piston rod end of the cylinder. The piston I81 is thus forced down to the head end of the cylinder and the rider roll will be rapidly raised until the finger I82 strikes the actuator 188a whereupon air will flow through the pipe line I81 to close the valve I88. The piston rod end of the cylinder will then no longer receive air from the pipe line I85a and the rider roll will be held in elevated position.

When it is desired to lower the rider roll, the main four-way valve I! is thrown to move the pass I8Ia to exhaust position and to move the pass I8Ib for connecting the pipe I 82 with the pipe 208. As soon as air is exhausted from the line I81, the valve I88 will open and the piston rod end of the cylinder will be exhausted. At the same time, air from the line I82 will flow through the pass l9lb into the line "I for admitting air pressure to the headend of the cylinder I86 thereby raising the piston Ill and lowering the roll I82.

The air operated machine therefore also provides a quick operating arrangement for raising and lowering the rider roll. The counterbalance effect on the rider roll is controlled by the weight I84 and the eccentric sprocket I" in the same manner as described in connection with the hand operated, and motor operated winder machine.

It will, of course, be understood that various details of the invention may b varied through a wide range without departing from the principles of this invention and it is, therefore, not the purpose to limit the patent granted hereon otherwise than necessitated by the scope of the appended claims.

I claim as my invention;

1. A winding machine comprising end frames defining vertical tracks, a rider roll asembly mounted on said tracks, sprockets rotatably mounted on the top portions of said end frames, chains secured on said sprockets at one of the ends thereof and to the rider roll assembly at the other of the ends thereof, means connecting said sprockets for co-rotation, a third sprocket connected to said means, a chain secured at one end to said third sprocket, a counterweight secured to the other end of said last mentioned chain,and means for eccentrically shifting said third sprocket to vary the counterweight effect on said means for acting through the first mentioned sprocket chains on said rider roll assembly.

2. A web winding machine comprising a pair of end frames defining vertical tracks, a rider roll assembly ridable on said tracks, tubular means rotatably mounted on top of said end frames and extending between the frames, sprockets secured on said tubular means, chains extending from said sprockets to said rider roll assembly, a counterweight shaft extending into said tubular means, means securing the counterweight shaft to the tubular means at the mid-point between said sprockets, and a counterweight assembly secured on said shaft for applying equal amounts of torque to each of the sprockets.

3. A web winding machine comprising a pair of spaced opposed end frames, bearing supports mounted on top of said end frames, a tubular member extending between said end frames and rotatably mounted in said bearing supports, sprockets secured on said tubular member near the ends thereof, chains trained around said sprockets, a rider roll assembly on said machine, means connecting said chains to said rider roll assembly, means for rotating said tubular means to raise and lower the rider roll assembly, a counterweight shaft extending into said tubular means, means securing said shaft to the tubular means at a point midway between the sprockets, a shiftable sprocket on said counterweight shaft, means for eccentrically adjusting the sprocket on the shaft, a chain secured on said shiftable sprocket, and a counterweight supported by said chain whereby said counterweight will act through the shiftable sprocket and sprocket shaft to apply equal turning torque to each of the first mentioned sprockets.

4. A paper winding machine comprising apair of spaced opposed end frames defining spaced parallel vertical tracks, a pair of under drums between said end frames, bearings rotatably mountmg the ends of the under drums on the end frames, a rider roll between the end frames, carriages slidable in said tracks rotatably mounting the rider roll for movement into and out of the winding mp between the under drums, chains secured to said, carriages, a sprocket rotatably mounted on top of each and frame receiving a chain therearound, means anchoring said chains to said sprockets, a tubular member extending between said sprockets connecting the sprockets for co-rotation, a counterweight shaft extending into said tubular member, means connecting said counterweight shaft to the tubular member at a point midway between the sprockets, and a counterweight tending to rotate said shaft for applying equal turning torque to each of said sprockets for identical counterweight effect on each of said carriages.

5. A web winding machin comprising a pair of spaced end frames, a pair of spaced horizontal winder drums between said end frames, bearings on said end frames rotatably mounting said winder drums, vertical tracks on said end frames, carriages mounted on said tracks, a rider roll between said end frames rotatably mounted in said carriages, said rider roll adapted to ride on a roll being wound by said under drums, a sprocket rotatably mounted on top of each end frame, chains connecting said sprockets with said carriages, a tubular member extending between the end frames and connecting said sprockets for co-rotation, a third sprocket between said first mentioned sprockets secured on said tubular member, a small sprocket rotatably mounted in one end frame, an endless chain connecting said small sprocket with the third sprocket, a hand wheel for rotating said small sprocket to drive the chain and thereby rotate the tubular member for raising and lowering the carriages, a support mounted alongside of an end frame, a counterweight shaft rotatably carried by said support, said counterweight shaft extending into said tubular member, means connecting said winder shaft with the tubular member at a point midway between said first mentioned sprockets, an adjustable eccentric sprocket on said counterweight shaft, a chain secured at one end to said eccentric sprocket, and a counterweight on the other end of said chain whereby said hand wheel can be manually operated to raise and lower the rider roll and whereby said counterweight will apply an equal counterbalancing force to each carriage in an amount determined by the degree of eccentricity of said eccentric sprocket.

6. In a windingmachine, a rider roll counterbalances assembly comprising a pair of sprocket and chain assemblies for raising and lowering the rider roll, means for connecting the sprockets of said assemblies for co-rotation, and a counterweight torque applying device connected to said means at a point midway between said sprockets for equally distributing counterweight torque to each of the sprockets.

7. In a winding machine, a rider roll adapted to ride on a roll of paper being wound by said machine, lifting chains acting on the ends of said rider roll, a hollow cross shaft, sprockets afllxed to said cross shaft anchoring the other ends of said chains, a counterbalance shaft extending into said cross-shaft, and means connecting said counterbalance shaft to said cross shaft at a point midway between said sprockets for equally distributing counterweight effect to both chains.

8. A winding machine comprising a pair of end frames providing vertical tracks on one side thereof, and ways on the other sides thereof, a rider roll assembly mounted on said tracks, sprockets rotatably mounted on top of said end frames, means for eccentrically shifting said sprockets, chains trained around said sprockets, counterweights ridable on said ways secured to one of the ends of said chains, and the other ends of said chains being secured to said rider roll assembly whereby the counterweight effect on the assembly is regulated by the degree of eccentricity of said sprockets.

9. A winding machine comprising a main frame defining a rider roll track on one side thereof, and a counterweight track on the other side thereof, a shaft mounted on top of said frame, a sprocket on said shaft, means for eccentrically shifting said sprocket relative to said shaft, a rider roll assembly mounted on said rider roll track, a counterweight mounted on said counterweight track and a chain trained around said sprocket secured to said rider roll assembly and to said counterweight, whereby said counterweight efiect is readily adjustable by eccentrically shifting said sprocket.

10. A winding machin comprising a frame, a winder drum rotatably mounted in said frame, a rider roll assembly mounted for vertical movement on said frame toward and away from said winder drum, a counterweight for said rider roll assembly, adjustable eccentric means between said counterweight and said rider roll assembly for regulating the counterweight effect on the rider roll assembly, a motor for raising and lowering said rider roll assembly, and automatic means connecting the motor in driving relation with the rider roll assembly only when the motor is energized.

11. A web winding machine comprising a main frame, winding mechanism mounted in said main frame, rider roll support carriages mounted on said frame for movement toward and away from said winding mechanism, sprockets rotatably mounted on top of said main frame, chains attached to said carriage and trained around said sprockets, counterweights on the other ends of said chains, a shaft fixed to one of said sprockets, a gear freely mounted on said shaft, pawls carried by said gear, a ratchet fixed to said shaft adapted to b engaged by said pawls, a brake device fixed to said shaft, a brake drum carried by said gear adapted to be engaged by said brake device, a motor for driving said gear, means automatically actuating said brake device to engage ,the brake drum whenever the motor is energized for driving the shaft to rotate said sprocket for raising and lowering the rider roll support carriages, a brake locking said motor whenever the motor is deenergized, and said ratchet and pawls permitting rotation of the shaft in one direction even when said motor is locked for allowing the rider roll carriages to raise during the winding operation.

12. A winding machine comprising mechanism for winding material into rolls, a rider adapted to rest on the rolls being wound to press the same against the winding mechanism, means movably mounting the rider on the machine to permit the rider to rise as the roll being wound increases in diameter, an electric motor for raising and lowering the rider, a brake locking said motor against rotation whenever the motor is deenergized, said brake adapted to hold the rider in elevated position, and a pawl and ratchet device permitting the rider to be raised by the roll being wound even when the motor is locked.

13. A winding machine comprising a pair of under drums defining a winding nip adapted to receive a winder shaft for winding a roll of web material around the shaft, a rider roll adapted to ride on top of the roll being wound for holding the roll against the winder drum, a reversible electric motor for raising and lowering the rider roll, a pawl and ratchet drive connection between the motor and rider roll permitting the roll being wound to raise the rider roll without rotating the motor, a solenoid operated brake locking said said motor whenever the motor is deenergized to hold the rider roll in elevated position, and an air operated clutch device directly co'iipling said motor with the rider roll whenever the motor is energized to raise and lower the rider roll without acting through the pawl and ratchet connection.

14. A web winding machine comprising a main frame, a pair of under drums rotatably mounted in said main frame, a rider roll mounted for vertical movement on said main frame toward and away from the winding nip defined by said under drums, sprockets rotatably mounted on the top portions of said main frame, chains extending from said rider roll around said sprockets, counterweights on said chains, a drive shaft for one of said sprockets, a gear freely rotatable on said drive shaft, an electric motor driving said gear, a solenoid operated brake for locking said motor when the motor is deenergized, an air operated brake afilxed to said shaft, a brake drum on said gear engaged by said brake whenever the motor is energized to drive the shaft, pawls on said gear, a ratchet fixed to said shaft for engaging said pawls, said pawls and ratchet being arranged for holding the shaft against rotation in one direction whenever the motor is locked to prevent lowering of the rider roll without interfering with raising of the rider roll by the roll being wound, whereby said motor is adapted to rapidly raise and lower tne rider roll at the finish and start of a winding operation without actuating said pawls, over said ratchet.

1 5. A winding machine comprising mechanism for winding web material into a roll, a, rider roll adapted to ride on the roll being wound to hold the roll against the winding mechanism, a counterweight acting on the rider roll to control the effective weight thereof on the roll being wound, a pawl and ratchet device allowing the rider roll to raise while holding the same against lowering, and spring means in said pawl and ratchet device permitting the rider roll to'rest on the roll being wound in the event that the rider roll is inadvertently raised above operating position.

16. Ina web winding machine, rider roll raising and lowering mechanism which comprises a sprocket and chain assembly operatively connected to the rider roll, a shaft for driving said sprocket, a gear freely rotatable on said shaft, an electric motor in meshed engagement with said gear, a solenoid operated brake locking said electric motor whenever the motor is deenergized, an air operated brake coupling said gear with said shaft whenever the motor is energized, and a limit switch driven by said shaft for controlling energization of said motor.

17. In a web winding machine, rider roll raising and lowering mechanism which comprises a shaft, a sprocket affixed to said shaft, a chain trained over said sprocket, a counterweight on 

